- added: documentation
- fixed: ClusterDiscovery: improved documentation
- fixed: improved debug outputs
- added: Cluster: eventClusterMemberLost()
- fixed: Cluster: updated documentation
- fixed: improved debug outputs
- fixed: removed unnecessary variable
- fixed: removed unnecessary RequestCoordinator
- added: ComChannel: closeChannel()
- added: ComSession: auto. close the connection in case the last
inferior comm. channel was closed
- fixed: ControlEntity: auto. close the comm. channel in case it should
unregistered
- fixed: ControlEntity: close the channel within unregisterComChannel(),
not in registerComChannel()
- added: HRMConfig: activated again the auto. cleanup(closing) of
connections
Merge branch 'qos_hrm' of ssh://chaos@192.168.23.50/~/workspace/FoG/.git into qos_hrm

Conflicts:
	fog.routing.hrm/src/de/tuilmenau/ics/fog/routing/hierarchical/HRMConfig.java
	fog.routing.hrm/src/de/tuilmenau/ics/fog/routing/hierarchical/management/ControlEntity.java
- fixed: ComSession: correct stop of the session in case the last
channel was closed
- fixed: better name of configuration entry
-
- fixed: RequestClusterParticipationProperty: removed coordinatorID
handling
- added: HRMController: getNodeL2Address()
- fixed: HRS: improved debug output
- fixed: ControlEntity: now, equals() neglects the coordinatorIDs
- fixed: ICluster: renamed getCoordinatorHostName() to
getCoordinatorNodeName()
- added: reworked clustering code - step 4
- added: Coordinator: expandSuperiorCluster()